Refractive Index Equation

Test yourself on Refractive Index Equation

• Light travels at 3 x 10⁸ m/s. If light passes through a material at 1.5 x 10⁸ m/s, what is the material's refractive index?

• Assuming that the speed of light in air is the same as the speed of light in a vacuum, what is the refractive index of air?

• If a medium has a high refractive index what will happen to a beam of light entering from air?